Ultramarine

#1C0D8B

General Information about Ultramarine

The hex color #1C0D8B, also known as Ultramarine, is a deep, saturated shade of blue. It belongs to the blue color family and is characterized by its rich and intense hue. In the RGB color model, #1C0D8B consists of 11% red, 5.1% green, and 54.5% blue. Its CMYK values are 80% cyan, 90% magenta, 0% yellow, and 45% black. Ultramarine is often associated with feelings of tranquility, depth, and sophistication. Historically, Ultramarine was derived from the precious stone lapis lazuli, making it a highly valued pigment in art and decoration. Today, it is widely used in various applications, including graphic design, web development, and fashion, to evoke a sense of elegance and mystery.

The color #1C0D8B, a deep ultramarine, presents significant accessibility challenges, especially for users with visual impairments. Its low luminance value of approximately 2% means that text rendered in this color requires very light foreground colors to meet WCAG standards for contrast ratio. For instance, using white text (#FFFFFF) on a #1C0D8B background yields a contrast ratio of around 11.8:1, which surpasses the AAA requirements. However, any darkening of the foreground color quickly degrades the contrast, making the text difficult to read. Therefore, careful consideration must be given to color pairings, and tools for checking contrast ratios are essential. Avoid using this color for important information without sufficient contrast, and provide alternative cues, such as icons or text formatting, to enhance usability for all users. Consider users with color blindness who may struggle to distinguish this color from other dark hues.

Shades

Digital Color Formats

RGB
28 13 139
RGB28 13 139
Red
Green
Blue
HSL
247.14deg 82.89% 29.8%
247.1482.8929.8HSL
Hue
Saturation
Lightness
HWB
247.14deg 5.1% 45.49%
247.145.145.49HWB
Hue
Whiteness
Blackness
hex#1C0D8B
rgb28 13 139
hsl247.14deg 82.89% 29.8%
cmyk79.86% 90.65% 0% 45.49%
hwb247.14deg 5.1% 45.49%
xyz-d650.05 0.02 0.25
oklch0.3095 0.1856 272.35
oklab0.3095 0.01 -0.19
CMYK
79.86% 90.65% 0% 45.49%
79.8690.65045.49CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.05 0.02 0.25
0.050.020.25XYZ
X
Y
Z
OKLCH
0.3095 0.1856 272.35
0.30950.1856272.35LCH
Lightness
Chroma
Hue
OKLAB
0.3095 0.01 -0.19
0.30950.01-0.19LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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